<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
    // let reg = new RegExp("1[3456789]\\d{9}")
    let reg = /^1[3456789]\d{9}$/;

    let b = reg.test("1351170682q");
    alert(b)

</script>

</body>
</html>